Review of Power Island Research in New Power Systems

With the continuous increase in the proportion of new energy sources in the new power system, the number of distributed power sources is also gradually increasing, leading to a growing possibility of power islanding in the power system. Power islanding refers to the temporary disconnection of a local independent power system from the main grid. The existence of power islands can have an impact on the stability of the power system. Therefore, the detection and optimal partitioning of power islands in the system to minimize their impact during faults, as well as the control of the internal operation of the islands, will become a future research focus. This article will provide a review of the existing technologies for the partitioning, monitoring, and operation control of power islands, and comprehensively analyze and compare the advantages and disadvantages of various techniques, laying the foundation for further research and development of power islands in the new power system.